Black horehound is a tender drought-hardy perennial and a member of the mint family. It prefers full sun and well-drained soils. To grow black horehound, plant it in early spring, either from seed or transplants. Seeds are slow to germinate, so sow them shallow and keep the soil moist for optimal emergence.

Use of Black Horehound

The parts of the black horehound plant that grow above the ground are used to make medicine. People take black horehound for various conditions, including nausea, vomiting, spasms, cough, and whooping cough. It is also used to relieve symptoms of nervous disorders, especially mild sleep problems.